git-am: force egrep to use correct characters set

According to egrep(1) the US-ASCII table is used when LC_ALL=C is set.
We do not rely here on the LC_ALL value we get from the environment.

Signed-off-by: Christian Himpel <chressie@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

diff --git a/git-am.sh b/git-am.sh
index 0ddd80fef9f177b52bff726e33849f06613efce0..c132f50da5f3416e6177dd7010e6db3660bdb073 100755 (executable)
--- a/git-am.sh
+++ b/git-am.sh
@@ -205,7 +205,7 @@ check_patch_format () {
                        # and see if it looks like that they all begin with the
                        # header field names...
                        sed -n -e '/^$/q' -e '/^[       ]/d' -e p "$1" |
-                       egrep -v '^[!-9;-~]+:' >/dev/null ||
+                       LC_ALL=C egrep -v '^[!-9;-~]+:' >/dev/null ||
                        patch_format=mbox
                fi
        } < "$1" || clean_abort